Ionic Zip：通过添加文件夹提取zip文件

Question

I, or better, we have a big problem! Our favorite game, Trove, has changed it's structure to be more moddable. Now we sit on our ModLoader and don't know how to update it. It should keep the old structure but it needs to apply a folder to each existing folder in the zips root. Let me show you:

mod.zip
|-blueprints
| |-fileA
|
|-particles
| |-fileB

It has to be extracted to each Live/blueprints/override/... and Live/particles/override/... (this is just an example... in a real mod, there are more folders and more files)

How can I do that? Is it possible with Ionic? Or do I have to use an other library?

Answer 1

Sure, something like this should work if I understood what you need.

private const string ZIP_FILE = @"c:\temp\mod.zip";

static void Main()
{
    // delete if already there
    File.Delete(ZIP_FILE);

    // create example zip file
    using(ZipFile zipToPack = new ZipFile(ZIP_FILE))
    {
        File.WriteAllText(@"c:\temp\fileA.txt", "This is file A");
        zipToPack.AddFile(@"c:\temp\fileA.txt", "blueprints");
        File.WriteAllText(@"c:\temp\fileB.txt", "This is file B");
        zipToPack.AddFile(@"c:\temp\fileB.txt", "particles");
        zipToPack.Save();
    }

    // extract inserting extra directory
    string baseExtractDir = @"c:\temp\LIVE";
    string overrideDir = "override";

    using (ZipFile zipToUnpack = new ZipFile(ZIP_FILE))
    {
        // loop through each entry in the zip file
        foreach (var zipEntry in zipToUnpack)
        {                    
            if (zipEntry.IsDirectory) continue;
            string zipDirectoryPath = Path.GetDirectoryName(zipEntry.FileName);
            // create the target file path as follows:
            // ("c:\temp\LIVE") + zip file path ("blueprints") + our extra path ("override") + zip file name ("fileA.txt")
            string targetExtractFile = Path.Combine(baseExtractDir, zipDirectoryPath, overrideDir, Path.GetFileName(zipEntry.FileName));
            // create the directory path if needed
            string targetExtractDir = Path.GetDirectoryName(targetExtractFile);
            if (!Directory.Exists(targetExtractDir)) Directory.CreateDirectory(targetExtractDir);
            // extract the zip file to our target file name
            using (FileStream stream = new FileStream(targetExtractFile, FileMode.Create))
                zipEntry.Extract(stream);
        }
    }

    Console.ReadKey();
}